Current conditions at
St. Louis Downtown Airport (KCPS)
Lat: 38.56°NLon: 90.15°WElev: 410ft.
Overcast
56°F
13°C
| Humidity | 67% |
| Wind Speed | W 7 mph |
| Barometer | 29.96 in (1014.5 mb) |
| Dewpoint | 45°F (7°C) |
| Visibility | 10.00 mi |
| Last update | 5 Nov 5:53 pm CST |
Extended Forecast for
Collinsville IL
Tonight
Low: 47 °F
Patchy
DrizzleFriday
High: 51 °F
Patchy
Drizzle then
Mostly SunnyFriday Night
Low: 33 °F
Mostly Clear
Saturday
High: 54 °F
Sunny
Saturday Night
Low: 33 °F
Mostly Clear
Sunday
High: 61 °F
Sunny
Sunday Night
Low: 39 °F
Clear
Monday
High: 67 °F
Sunny
Monday Night
Low: 43 °F
Clear
Detailed Forecast
Tonight
Patchy drizzle after 8pm. Cloudy, with a low around 47. Northwest wind 6 to 8 mph.
Friday
Patchy drizzle before 11am. Cloudy through mid morning, then gradual clearing, with a high near 51. North wind 8 to 11 mph.
Friday Night
Mostly clear, with a low around 33. North wind around 6 mph becoming calm in the evening.
Saturday
Sunny, with a high near 54. Calm wind becoming northwest around 5 mph.
Saturday Night
Mostly clear, with a low around 33. Calm wind.
Sunday
Sunny, with a high near 61.
Sunday Night
Clear, with a low around 39.
Monday
Sunny, with a high near 67.
Monday Night
Clear, with a low around 43.
Tuesday
Sunny, with a high near 66.
Tuesday Night
Clear, with a low around 41.
Veterans Day
Sunny, with a high near 65.
Wednesday Night
Mostly clear, with a low around 42.
Thursday
Sunny, with a high near 62.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Collinsville IL
38.68°N 89.97°W (Elev. 502 ft)
38.68°N 89.97°W (Elev. 502 ft)
4:51 pm CST Nov 5, 2026
5pm CST Nov 5, 2026-6pm CST Nov 12, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
